<!DOCTYPE html>  
<html lang="en">  
<head>  
   <meta charset="UTF-8">  
   <meta name="viewport" content="width=device-width, initial-scale=1.0">  
   <title>Vue 3 示例</title>
</head>  
<body>  
   <div id="app">
     <h1>{{msg}}</h1>
   </div>

   <script type="module" >
    import {createApp} from 'https://unpkg.com/vue@3/dist/vue.esm-browser.js'
    createApp({
        data(){
            return{
                msg: 'Hello Vue!'
            }
        }
    }).mount('#app')
   </script>
</body>  
</html>  